Water-treating apparatus



C. H. SPANGLER.

WATER TREATING APPARATUS.

APPLICATION FILED AUG24. 1920.

1,427,650, Patented Aug. 29, 1922.

UNITED STATES.

PATENT OFFICE.

CHARLES H. srANGLEItoE READING, PENNSYLVANIA, ASSIGNOR, BY JIEEcr AND MESNE ASSIGNMENTS, T0 METROPOLITAN EDISON COMPANY, or READING, PENN- SYLVANIA, A CORPORATION or PENNSYLVANIA.

WATER-TREATING APPARATUS.

Specification of Letters Patent.

Patented Aug. 29, 1922.

Application filed- August 24, 1920. Serial No. 405,637.

To all whom it may concern Be it known that I, CHARLES H. SPANG- LER, a citizen of the United States, residing at Reading, in the county of Berks, and State of Pennsylvania, have invented 'certain new and useful Improvements in Water-Treating Apparatus, of which the following is a specification.

My invention relates to water treating apparatus adapted more particularly for softening or otherwise correcting the feed water supplied to boilers; the main purpose being to provide for reliably furnishing thereto a flow of determined chemical liquid in quantity regulated in accord with the varying load on the plant served. The invention is fully described in connection with the accompanying drawing and is specifically defined in the claims.

Figure 1 of the drawing is a diagrammatic showing ofa complete apparatus embodyin the invention as it has been satisfactori y employed in actual practice; the specific construction and arrangement being capable of modification without departing from the invention as hereinafter-set forth. Fig. 2 is a separate view of the armature pawl.

As already stated my invention provides for regulating the uantity of determined chemical liquid which is supplied to the boiler-feed water, in direct accordwith the load on the station served; this method, which has not been heretofore employed so far as I am aware, not only permitting of very convenient and satisfactory control of the chemical-liquid supply but also insuring more complete and reliable use of it for the intended purpose. 1

As indicated in the accompanying diarammatic drawing the required chemical liquid is stored in t e tank 2 located above the point of its mixture with the boiler-feed water; which oint may be'a preheater such as is common y employed and indicated at 3. The chemical liquid is fed to the latter by avity, through an adjustable discharge con iiit 4 in the tank, as regulated by proper adjustment of the upper end 5 of said conduit relative to the surface of the stored liquid. The adjustment of this up'pen end 5.of conduit 4 to regulate the flow of chemical 'liquid'is directly effected; as indicated,

by the unwinding of a suspending cord 6 therefor, from a drum 7; as determined by a regulating mechanism comprising an electro-magnet 10 and armature'pawl 11, and an electro-magnet control mechanism comprising a rotary contact drum l5 and a relatively fixed contact arm 16; the frequency with which the magnet is energized and the consequent rate of delivery from tank 4 being varied as desired by setting said fixed contact arm 16 to one or another cooperative position corresponding with the changing load on the station and indicated on a scale bar 17.

As diagrammatically indicated, the armature pawl 11 controls the unwinding of the conduit-suspending cord 6 from drum 7, through an ordinary train .of gears; each energizing of the electro-magnet 10 causing a single tooth movement of gear 20 and a determinedly-reduced turning movement of drum 7 to lower the conduit end 5. The frequency with which the electro-magnet 10 is energized is determined by the varying number of contacts made in a given time between the electrically connected contactpoints 25 on contact drum 15 and the relatively fixed contact point on the adjustable arm 16; which variation is effected as follows: The contact drum 15 is rotated at a uniform speed, by a suitablyconnected motor 26 as indicated. The contacts- 25 on said drum are arranged in different circular series 27, 28, 29, &c. with a gradually increasing number in each series; so that thedicated though it may obviously be effected automatically in well known manner when desired.

The feeding of the chemical liquid being thus controlled by the varying number of contacts made at each revolution of the-drum 15, itis important that the operator be con 'stantly informed as to their effective working, and-I therefore introduce into the electric circuit a contact-signal as indicated by lamp 30, the regular flashing of which will show that the energizing of the electro-magthe general net 10 and the resulting lowerin of'the conduit end 5 is beingproperly e ected. The

diagrammatic showing sufliciently indicates features and cooperative arrangement of the several parts of my ap paratus 'to enable eflective use thereof by those expert inthe art in specifically modified form within the scope of my invention as defined in the claims.

What I claim is:

.1. In an apparatus for treating boilerfeed water, a chemical liquid reservoir havingan adjustable delivery conduit; means for adjusting said conduit comprising an electromagnet; and cuit closing mechanism comprising relatively adjustable contacts.

2. In an apparatusfor treating boilerfeed water, a chemical liquid reservoir having an adjustable delivery conduit; means for adjusting said conduit comprising an electromagnet and a pawl armature; and an electromagnetic circuit-closing mechanism comprising a rotary drum provided an electromagnetic cirwith contacts arranged in circular series of varying numbers and an adjustably-fixed cooperating contact.

3. In an apparatus for treating boilerfeed Water a chemical liquid reservoir having an ad ustable delivery conduit; means for adjusting said conduit comprising an electromagnet and a pawl armature; an electromagnetic circuit-closing mechanism comprising a rotary drum provided vwith contacts arranged in. circular series of varying number and an adjustably fixed cooperatlng contact; and an interposed contact signal device.

4. In -an apparatus for treating boilerfeed Water, a chemical liquid reservoir having an adjustable delivery conduit; means for adjusting said conduit comprising an electromagnet and an electromagnetic circuit closing mechanism comprising contacts arranged in series of varying numbers and an adjustable cooperating contact.

In testimony whereof I affix my signature.

CHARLES H. SPANGLER. 

